-89.97% is the change from 299 to 30
Calculation steps:
[( 30 - 299 ) ÷ 299] x 100 = -89.97%
Formula
Percentage change = [(30 - 299) / 299] x 100
Subtract the new number by the original number
30 - 299 = -269
-269 ÷ 299 = -0.8996655518394648
-0.8996655518394648 x 100 = -89.97%